C3909

C3909 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3909 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford C3909 Fault Code Meaning :

Ford C3909 Symptoms :

Ford C3909 Reasons :

How To Fix Ford C3909 Trouble Code ?

Which Ford cars have the code C3909?

  • C3909 Ford Aerostar
  • C3909 Ford Bronco
  • C3909 Ford C-Max
  • C3909 Ford C-Max Energi
  • C3909 Ford C-Max Hybrid
  • C3909 Ford Contour
  • C3909 Ford Crown Victoria
  • C3909 Ford EcoSport
  • C3909 Ford Econoline
  • C3909 Ford Edge
  • C3909 Ford Escape
  • C3909 Ford Escape Hybrid
  • C3909 Ford Escort
  • C3909 Ford Everest
  • C3909 Ford Excursion
  • C3909 Ford Expedition
  • C3909 Ford Explorer
  • C3909 Ford Explorer Sport Trac
  • C3909 Ford F-150
  • C3909 Ford F-250
  • C3909 Ford F-350
  • C3909 Ford Fiesta
  • C3909 Ford Flex
  • C3909 Ford Focus
  • C3909 Ford Focus Electric
  • C3909 Ford Freestar
  • C3909 Ford Freestyle
  • C3909 Ford Fusion
  • C3909 Ford Fusion Energi
  • C3909 Ford Fusion Hybrid
  • C3909 Ford Fusion Plug-In Hybrid
  • C3909 Ford GT
  • C3909 Ford Mustang
  • C3909 Ford Mustang Mach-E
  • C3909 Ford Mystique
  • C3909 Ford Probe
  • C3909 Ford Ranger
  • C3909 Ford Taurus
  • C3909 Ford Taurus X
  • C3909 Ford Tempo
  • C3909 Ford Thunderbird
  • C3909 Ford Transit
  • C3909 Ford Transit Connect
  • C3909 Ford Windstar

A code is a fault code and it indicates that something has gone wrong with your car's engine.

It can be caused by many different problems, including a faulty battery, a bad fuel pump, or even a cracked exhaust manifold.

You will need to diagnose the problem before you can fix it. The best way to do this is with an OBD scanner tool.

A scan tool will tell you what needs fixing and how much it will cost in order to fix that particular issue.